253123653 has 4 divisors (see below), whose sum is σ = 337498208. Its totient is φ = 168749100.

The previous prime is 253123609. The next prime is 253123667. The reversal of 253123653 is 356321352.

253123653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 253123653 - 2¹⁰ = 253122629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 253123653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253123603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42187273 + ... + 42187278.

It is an arithmetic number, because the mean of its divisors is an integer number (84374552).

Almost surely, 2^253123653 is an apocalyptic number.

It is an amenable number.

253123653 is a deficient number, since it is larger than the sum of its proper divisors (84374555).

253123653 is an equidigital number, since it uses as much as digits as its factorization.

253123653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84374554.

The product of its digits is 16200, while the sum is 30.

The square root of 253123653 is about 15909.8602445150. The cubic root of 253123653 is about 632.5733768965.

The spelling of 253123653 in words is "two hundred fifty-three million, one hundred twenty-three thousand, six hundred fifty-three".